an introduction to high-performance coating...
TRANSCRIPT
An Introduction to HIGH-PERFORMANCE COATING SYSTEMS
Course Overview
This CEU will increase your general awareness of not only what high-performance coatings are and where they are used but also factors that influence performance, service life, and selection.
Learning Objectives
Upon completing this course, you should be able to:
• Explain the purpose and common applications of high-performance coatings.
• Discuss how high-performance coatings help control corrosion.
• Describe the benefits of a three-coat system.
• Identify the factors that influence the coating-system selection.
SECTION 1Basic Principles of High-Performance Coatings
The Big Picture of High-Performance Coatings
Protection | Performance | Aesthetics
SECTION 2Why High-Performance Coatings Are Used
Why AreHigh-Performance Coatings Used?
• Protect substrate from corrosion
• Provide resistance to chemical and abrasion
• Ensure durability and safety
• Improve appearance
What Is Corrosion?
Corrosion is the deterioration of a material (primarily metals).
Metallic Corrosion• Four components are required for
corrosion to occur:
– Anode: an “active” metal component
– Cathode: a less-active metal component
– Metallic Pathway: a direct connection between the anode and cathode
– Electrolyte: a medium that conducts electricity, like water
Metallic Corrosion
• Metal expands up to23 times original size
• High-performance coatings control corrosion
PrimerIntermediate CoatFinish Coat Water
Water
IRON IRON
IRONRUST
RUST
Water & Oxygen
IRON
Metal Corrosion
• Several factorsinfluence corrosion
– Chemicals
– Temperature
–Moisture
– Substrate Design
Corrosion Rate
High-Performance Coatings: Corrosion Control
Barrierbetween
substrate and water
Insulates the substrate from contact
with soil
Protects substrate from
contact with chemicals
SECTION 3Where High-Performance Coatings Are Used
Industrial Project
Structures exposed to harsh environmental conditions
Non-Industrial Project
High-performance coatings are not limited to industrial purposes.
Construction Materials
DrywallConcrete, Cement, Masonry
Steel
Steel
Creates a durable barrier between the metal and service environment
Concrete, Cement, & Brick Masonry
Protection from potentially damaging environment
Drywall
Enhanced durability, resistant to harsh chemicals, abrasion, and marring
What other types of spaces and structures require exceptional durability?
Non-Industrial Projects
• Hospitals and health-care facilities• Restaurants, hotels, and retailers
Non-Industrial Projects
• Abrasion and chemical resistance • Corrosion protection• Exceptional durability
Non-Industrial Projects
• Sporting arenas and ballparks• Areas with expanses of
flooring and handrails
Warehouse and Distribution Centers
•Wear and tear of construction equipment
• Heavy machinery
• Lift tires, oil fuel, and material spills
Building Maintenance & Facilities Room
• Tanks and pipes
• Color coding
SECTION 4Surface Preparation
Surface preparation is a result not a process.
Surface Preparation
Ninety percent of premature coating failures are a result of improper surface preparation.
Surface Preparation
Techniques varybased on:– Coating– Service environment
Surface Preparation and PrimingStandards
• Industry standards
• Technical publications
• Training and certification
SSPCThe Society for Protective
Coatings
NACE The Worldwide Corrosion
Authority
SECTION 5Three-Coat System
Three-Coat System
Pin Holes in Coatings
Finish Coat
Intermediate
PrimerSubstrate
• Number of coats is more important than thickness
• Protection in layers
Three-Coat System
Pin Holes in Coatings
Finish CoatIntermediatePrimer
Substrate
• Surface profile should be buried by the dry film of primer
• Insufficient coating results in pinpoint rusting
Pinpoint rusting
Three-Coat System: Primers
• Adhere to the surface and resist corrosion• Different substrates require different primers• Primers are effective on properly prepared
surface
Three-Coat System: Intermediate
• Intermediate layers offer more protection• Additional coats protect against pinholes
Three-Coat System: Finish Coat
• Provides additional protection• Improve abrasion resistance • Aesthetics
SECTION 6Top Down and Bottom Up
Top-Down & Bottom-Up Approaches
Top-DownCoating
Goal
Type of prep
Substrate requirements
Aesthetics
Service/operational environment
Bottom-UpSubstrate
SECTION 7High-Performance Single-Component and Dual-Component Formulas
High-Performance Finish Coats
Single-component
coatings
Dual-component
coatings
Single-Component Coatings
Single-component
coatings
Designed to meet a unique need or purpose
Broad selection of colors and glosses, easy to apply
Hard and durable,chemical resistant
Dual-Component Coatings
Dual-component
coatings
Consist of an “A” and a “B” portion (chemical reaction)
Harder and more durable than a single-component
product
UV, chemical, corrosion, andabrasion resistant and
water immersible
SECTION 8Factors that Influence the Choice of High-Performance Coatings
Environmental & Operations Conditions
• Interior and exterior spaces
– Interior spaces: heat, high humidity, and particulate matter
– Exterior spaces: freeze-thaw conditions, heat and humidity, UV exposure, salt
Environmental & Operations Conditions
• Environmental conditions• Healthy indoor environments for occupants•Occupied spaces vs. new construction
Factors that Influence the Choice of aHigh-Performance Coating System
• Anticipated use and exposureü Service environmentü Expected exposureü Job typeü Substrate typeü Surface Preparationü Budgetü Customer Expectations
Standards and Specialists
•Rely on standards and specialists – Applications and surface preparation standards
can mitigate confusion
– Coating manufacturers are a valuable resource
–With guidance, projects can be done properly
Summary
At first glance, the world of high-performance coatings may appear overwhelming. But a good starting point for understanding these coatings is to recognize that the same benefits high-performance coatings provide for large-scale industrial projects can be applied to non-industrial projects.
So when exceptional durability, safety, and longevity are needed or required, specify a high-performance coating system. These coatings are designed specifically to protect substrates from chemicals, abrasion, and corrosion and enhance project aesthetics.
Thank You
Thank you for your interest in high-performance coating systems. This concludes the American Institute of Architects Continuing Education Systems and IDCEC Course.
www.benjaminmoore.com
Master Painters Institutewww.paintinfo.com
NACE Internationalwww.nace.org
National Paint & Coatings Associationwww.paint.org
Society for Protective Coatingswww.sspc.org
Benjamin Moore & Co.www.benjaminmoore.com
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